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ZVS Control For a GaN-Based CRM Totem-Pole PFC Converter With ZCD
ID：65 View Protection：ATTENDEE Updated Time：2024-08-15 10:47:29 Hits：348 Poster Presentation

Start Time：Pending（Asia/Shanghai）

Duration：Pending

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Abstract
This paper presents a detailed analysis of a single-phase GaN-based power factor correction (PFC) critical-conduction-mode (CRM) totem-pole rectifier with zero-voltage-switching (ZVS) control. The paper thoroughly derives the ZVS strategy for full-line periodic zero-voltage switching and introduces a double-closed-loop analytical converter model integrated with a real-time computing module. A critical aspect of ZVS implementation is the zero-current detection (ZCD) module. Thus, the paper provides a detailed analysis of ZCD signal delays and performs quantitative calculations to compensate for these delays. Both a simulation model and a small power prototype are developed and tested. Experimental results demonstrate that the proposed control strategy effectively achieves CRM totem-pole zero-voltage switching.
Keywords
Gallium Nitride (GaN), totem-pole, CRM, zero current detection (ZCD), zero-voltage-switching (ZVS).
Speaker
zhenbiao Lu
student Huazhong University of Science and Technology

Submission Author
zhenbiao Lu Huazhong University of Science and Technology
Hongfa Ding Huazhong University of Science and Technology；Wuhan National High Magnetic Field Center;School of Electrical and Electronic Engineering
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Important Date

  • Conference Date

    Nov 06

    2024

    to

    Nov 08

    2024

  • Sep 15 2024

    Draft paper submission deadline

  • Nov 08 2024

    Registration deadline

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Huazhong University of Science and Technology
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